Synthesis and crystal structure of a group of phenoxo-bridged heterodinuclear [NiIIHgII] Schiff base complexes
作者:Debasis Karmakar、Michel Fleck、Rajat Saha、Manas Layek、Sanjay Kumar、Debasis Bandyopadhyay
DOI:10.1016/j.poly.2012.09.024
日期:2013.1
(L4), (4) have been prepared. The syntheses have been achieved by reacting equimolar amounts of nickel perchlorate, mercuric chloride and the respective tetradentate Schiff base ligand (H2L) in methanol medium. The complexes have been characterized by microanalytical, spectroscopic, single crystal X-ray diffraction and other physicochemical studies. Structural studies on 1–4 reveal the presence of a
摘要四个新的具有一组通式[NiHg(L)Cl2]的异双核配合物,其中席夫碱阴离子为L = 2,2'-[丙烷-1,2-二基双(亚硝基甲基亚甲基)]二酚盐(L1), (1); 2,2'-[丙烷-1,2-二基双(腈基-1-基-1-亚烷基)]二酚盐(L2),(2); 2,2'-[丙烷-1,2-二基双(亚硝基丙-1-基-1-亚烷基)]二酚盐(L3),(3)和2,2'-[丙烷-1,3-二基双(亚硝基甲基亚甲基)制备了二酚盐(L4),(4)。通过使等摩尔量的高氯酸镍,氯化汞和相应的四齿席夫碱配体(H2L)在甲醇介质中反应来完成合成。通过显微分析,光谱学,单晶X射线衍射和其他物理化学研究对复合物进行了表征。对1-4的结构研究表明存在异双核[NiIIHgII]单元,其中中心Ni(II)和Hg(II)离子通过两个酚盐氧桥相互连接。在每个配合物中,Ni(II)离子采用扭曲的方形平面(NiO2N2)几何形状,而H